Home / 520,624,328.16-780,525,593.60-258,127,890.88

Finding the Fourth Proportional to 520,624,328.16, 780,525,593.60 and 258,127,890.88

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Solution

The fourth proportional to 520,624,328.16, 780,525,593.60 and 258,127,890.88 is: 386,988,110.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,624,328.16 : 780,525,593.60 = 258,127,890.88 : x
  2. Step 2: Convert to fraction form
    520,624,328.16/780,525,593.60 = 258,127,890.88/x
  3. Step 3: Cross multiply
    520,624,328.16x = 780,525,593.60 × 258,127,890.88
  4. Step 4: Simplify right side
    520,624,328.16x = 201,475,425,253,828,032
  5. Step 5: Solve for x
    x = 201,475,425,253,828,032/520,624,328.16
  6. Step 6: Final answer
    x = 386,988,110.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.